924Board.org

jebe · Joined: 16 Dec 2002 Posts: 39

and I...;

-fiddled with the connector on the headlight motor
-put in a new relay on the headlight motor
-changed the headlight switch in the dashboard

When closed manually with the knob, the headlights open normally with the switch, so I guess the headlight motor is working OK as it is only rotating in one way (correct? or is an internal problem possible? is it a diodes problem, but thought only early cars have those or not? mine is from '88 ).

I noticed a few similar posts but none of them helped me. Please give some options I can check as non-electrician, and if possible with some accuracy as I'm easily sinking in a depression when reading "check grounds" or "check wires" (oh no, where!?, which ones, how...

)

TNX a million,
JB
(924S, 1988, it's my 3rd 924 that again confirms these cars are extremely weak electric wise)

GGe · Posted: Fri Feb 04, 2005 6:35 am Post subject:

I have the same problem with my car! Can't find out what's wrong...

I was told to replace the light switch, but I haven't done that yet... but I opened the switch (its rather simple) and I couldn't see anything wrong with it.

But there is one other thing... I bought my car 3years ago wrecked and I didn't drive it until last summer so this has been like this probably the whole time I've had it. And I saw that if the lights are closed and I push the light button once (where only the park lights are supposed to come) the headlamps also turn on... but they are still closed. And then I push the light button again they pop up, but they always come on when I only want the park lights...

Do you know if the same thing happens in your car?
_________________
Guðmundur Geir...
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Porsche944 '85
Hyundai Pony GSi '93
Dino499Reed

www.melur.tk

jebe · Joined: 16 Dec 2002 Posts: 39

Nope don't think they do this, just low beams/parklights not the main headlights in the middle position.

So you leave your lights up, or open the hood every time to close them by hand. Man, what a bummer.

Who is helping us giving back our fabulous flipping lights?

GGe · Posted: Fri Feb 04, 2005 7:12 am Post subject:

jebb, I have to leave them open...
_________________
Guðmundur Geir...
http://frontpage.simnet.is/aronpastrana/myndir/blymynd2.JPG

Porsche944 '85
Hyundai Pony GSi '93
Dino499Reed

www.melur.tk

jebe · Joined: 16 Dec 2002 Posts: 39

Any help yet for both of us??????

Sleykin · Posted: Sun Feb 06, 2005 12:59 am Post subject:

I have not needed to get into these yet but take a look here
http://www.clarks-garage.com/shop-manual/body-05.htm
You may find the information useful. It sounds like the rotory switch in the headlight motor is dirty and the next article in the shop manual tells how to clean that. You could also do a search on Clark's message board and find several recent posts relating to your problem. I believe you are correct in that there are no diodeds in the motors in your cars. There may be diodes in the relay circuit though.
HTH
_________________
Glenn Neff
Medford, OR
87' 924S

Sleykin · Posted: Sun Feb 06, 2005 1:04 am Post subject:

This is the link to the motor removal and cleaning/repair proceedure.
http://www.clarks-garage.com/shop-manual/elect-21.htm
_________________
Glenn Neff
Medford, OR
87' 924S

jebe · Joined: 16 Dec 2002 Posts: 39

TNX, i'll try that and hope that's the solution

Smoothie · Posted: Sun Feb 06, 2005 2:06 am Post subject:

Your problem sounds slightly different from one I've had, but it's real quick and easy to check it out.. In my case the headlights sometimes would go neither up nor down and just giving the headlight motor relay a wiggle would get them moving. So give that a try - shut off the headlights, then go and see if you can get them to turn down by wiggling the relay. -And make sure you have no body parts in the way of the mechanism in case it works. If it does work, obviously there's something wrong probably in the wiring to the back of the relay connection - in my case, once it's positioned correctly, it'll stay good for years until the next time I touch the relay, then it usually needs another wiggle.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Joes924Racer · Posted: Sun Feb 06, 2005 4:47 am Post subject:

Smoothies right with the wiggle. Waite till you get the urge
loosen the nut and reposition the bracket so there down..
youll fix the switch.. I found a few switches ealr and late style in my search though I ended up with a nice metal 2 way momentary switch
with nutral in the middle works quite well. Good-luck
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

dpw928 · Joined: 02 Nov 2002 Posts: 1860 Location: owasso, ok 74055

Had the same problem in my 928. The problem was traced down to a bad diode in the headlight motor.

Dennis
_________________
81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black

jebe · Joined: 16 Dec 2002 Posts: 39

Gonna work on it in a few hours. TNX

jebe · Joined: 16 Dec 2002 Posts: 39

HELP!!!!!
Followed all instructions, again;
new motor-relay
new fuses nr1 & nr2
new switch

now checked voltage as in Clarke's advice:

"First, disconnect the 4-pin connector to the motor. Check the voltages on the conductors.
-Motor or ignition on Light switch off. Brown and grey: 0 volts, Red/Green and Red/Blue: 12 volts
-Motor or ignition on Light switch on. Brown and Red/Green: 0 volts. Grey and Red/Blue: 12 volts.
-Motor or ignition off Light switchoff . Brown and grey : 0 volts. Red/Green and Red/Blue : 12 volts.
-If the voltages are not as above, the problem lies in the headlight relay or dash switch. Remove and check them with an ohmmeter. Check the continuity of the conductors. Have fun !!"

I indeed get strange readings, only the grey one in on-on is 12V others are messed up (3,5 / 5,1 V ?? etc)

What now? When it says "the problem lies in the headlight relay" does he mean the one on the motor (which I guess cannot because it is new, plus in the current flow it's behind the connector I just checked), so he means nr 1 of nr 4 on the relay panel or another one ??? (sorry for English, I'm from Amsterdam)

dpw928 · Joined: 02 Nov 2002 Posts: 1860 Location: owasso, ok 74055

Jebe,

The low voltages are normally caused by corroded connections. If the motor tries to work when you are manually turning the knob, the problem is normally fixed by cleaning the connections. The relay referred to is on the motor. If the motor is totally dead when manually turning the knob, pull the boot off the motor (may require removal) and look for two diodes. Tesing the diodes requires the use of an ohm meter. If the diodes are good, the ohm meter will show a circuit in one direction only when you swap the leads.

Dennis
_________________
81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black

jebe · Joined: 16 Dec 2002 Posts: 39

Here is what I don't understand:

it's about:

I checked voltages on the connector that goes TO the headlight motor, and they where wrong.

So why so many posts refering to search/clean etc being behind that connector, namely the headlight motor itself, the relay on the motor the diodes etc? (besides I heard this later model doesn't suppose to have diodes according to earlier posts?)

Is it wrong of me to think according to measurements on the connector the problem is occuring BEFORE the headlight motor conncetor? (but where?)

-I'll electrocute the f**n thing-